Well done Terry - it is indeed Iron Range!
Heathrow Harry - someone certainly did "expect to get bombed"! Other than Horn Island and Higgins, this was the closest mainland airfield to New Guinea.
The site was selected because of its proximity to the nearby deep water pier at Portland Roads, and construction by the US Army's 46th Engineer Regiment commenced in April 1942. It was a very active base until mid-1944, being used by the at various times by the USAAF's 26th BG (B-26 Marauders), 43rd BG (B-17 Fortress) and 90th BG (B-24 Liberators).
The northern runway was known as GORDON, while the SW runway was OLD CLAUDIE and the parallel more easterly runway NEW CLAUDIE.
The separated runway configuration was not that unusual for the period. Other examples that come to mind are Mareeba (another very active US base), Carpentaria Downs, Antill Plains, Woodstock, Fanning, Macrossan, Condamine, Brymaroo and Strathpine. The parallel runaway arrangement was unusual though, probably because Old Claudie was found to be flood-prone, while New Claudie was never fully completed.
Gordon is still in use as Iron Range Airport (sometimes called Lockhart River), while nature has totally enveloped the Claudie strips. Old Claude (which was bituminized) and some of the taxiways remain very (and I mean very) faintly visible as the photos show.
Over to you, Terry....